https://eaglerod.com/item/5523934-4140-crank-chevy-bb-int-balance?category=294738
CRS-545442526385 | 4.250" Stroke, Internal Balance, Forged 4140 Steel, Chevrolet Big Block | Eagle...
FORGED 4140 STEEL CRANK - CHEVROLET 454, 4.250" STROKE, INTERNAL BALANCE